The paper illustrates the loss mechanism with weak slump value of the concrete,analyzes the influence of cement fineness,aggregate, and alkali content on the slump value loss of concrete mixtures,and points out factual improvement measures,so as to solve the slump value prob-lems of the concrete and enhance the increasing development of the commercial concrete industry.%简述了混凝土坍落度经时损失机理，分析了水泥细度、砂石集料、碱含量对混凝土拌合物坍落度损失的影响，并提出了具体的改善措施，以有效解决混凝土坍落度损失问题，从而促进商品混凝土行业的不断发展。
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